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Finding the Fourth Proportional to 123,753.84, 170,770.84 and 72,768.64

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Solution

The fourth proportional to 123,753.84, 170,770.84 and 72,768.64 is: 100,415.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,753.84 : 170,770.84 = 72,768.64 : x
  2. Step 2: Convert to fraction form
    123,753.84/170,770.84 = 72,768.64/x
  3. Step 3: Cross multiply
    123,753.84x = 170,770.84 × 72,768.64
  4. Step 4: Simplify right side
    123,753.84x = 12,426,761,778.46
  5. Step 5: Solve for x
    x = 12,426,761,778.46/123,753.84
  6. Step 6: Final answer
    x = 100,415.16

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